What happens when calcium carbonate reacts with our acidic rain? (non-scientific explanation )

Okay, well the first thing we need to understand with chemistry is something known as Reaction Rates.  This is the amount of time it takes to complete a reaction.

Acidic Rain will not cause a building to instantly crumble or anything like that.  Instead, calcium carbonate (which is chalk) will slowly break down due to acidity of the rain.

When something has a very high or very low ph, it is known to be corrosive.  An example of a type of corrosion is the reaction between copper and oxygen to produce rust.

When Acidic Rain interacts with calcium carbonate, over time it will slowly start to degrade and break down.  One thing you can compare it to is erosion.

Dissolution or more commonly called erosion 

Yes

Explanation: